Lumber hoist truck



Sept. 15, 1953 .L B. TIPPS LUMBER HOIST TRUCK INVENTOR ATTORNEYS Sept.15, 1953 J. B. TIPPS 2,652,164

LUMBER HOIST TRUCK Filed ocx. le, 195o 4 sheets-sheet 2 u w. l1 FU Z9 j'L1-ff /9 ,9 35 `55 n\1\/E1\1TOR` Z4 fcze-. Tip/US .5 @F BY i I vATTORNEYS Sept. 15, 1953 J. B. TIPPS LUMBER HoIsT TRUCK 4 Sheets-Sheet 3Filed Oct. 16. 1950 INVITOR lv/215 ATTORNEYS Sept. l5, 1953 J. B. lTIPPS2,652,164

LUMBER HOIST TRUCK Fil'ed oet. 1e, 195o 4 sheets-sheet 4 ATTORNEYPatented Sept. 15, 1953 LUMBER HOISTLTIRUCK ilakef-Tipps, Laurel, Miss.

Application October 16, 1950,:SeriallNoLi1'90Q330 llGlaim. l1 .Thisinvention .relates to a materiallran'dling "device .An object ofpthisinvention is ltor-provide a vde- `'vicewhich is capable of handlinglumber `or the like for stacking or removinglumber' in relatively largequantities.

YAnother object of this :invention is to ,provide 'a lumber "or materialhandling device which can be'mounted on a truck frame so that the'lumber'canne stackedior removedandshi'fted about.

Afnrther *object of this "invention is toprovide 4a device of this lkind.which includes means for tilting the material Vwhen Athe latter 'islbein'g shifted'so as toprevent the material 'from slipping oi of 'thecarriage or elevator.

A "urther objectoithis ,invention is tojprovide a material handlingdevice of 'this .kind which canbe 4mounted on a conventional truckhaving a power takeoff.

`With the above and other objects `inviewgrny invention consists in thearrangement, combination and details Yoi `construction NdisclosedA inthe drawings ,and.'specication, and then lrnorevjparticularly pointed'out in the appended claim.

In .the drawings: Y Figure -l vis a detailed side elevation partlybroken away Aof Yamaterial handling 'device icon- 4structed according to.an embodiment -oithis invention.

Figure'2 is a rear elevationApartly'insecti'on of the device.

vFigure 3 is a `vertical 'section taken 'substantiallyonthe line 3 3ofFigure 12.

'Figure 4..is a sectional view taken on 'the'lin'e l5-'fl of Figure'.

v.liigure 5 visa fragmentary longitudinal section of the tilt adjustingmeans.

Figure .Gais asectional view :taken on :the Eline 6-6 of Figure 5.

Figure '7 is a cross sectional view taken on line l-'l "of Figure 3.

YFigure 8 'isa detail side elevation or" the vllframe 'bers 9 connected'togetherbyconnecting channel members "20.

The channel .members 'I9 'are disposed with their vchannelsin.confronting relationan'd constituteiguide channls'ora carriageorelevator generally designated as 2L The elevator '2l `is `formed of aApair ofoutertubular framemembers 221which are connected together '.byconnecting "channel members AThe tubularmembers "22 have pix/totallysecuredto fthe `outer sides -thereof a plurality of 'vertically'spacedapart rollers '24 which engage withinthe vchannels i9.

Theelevator or carriage'Zl `also includesapair of rearwardlyjprojeetingbars`2`5 which' constitute liit'bars and are disposed at right Aangles.to the 'carriage '2L The'bars orffingers "E5 taper rearwardly with `thesmaller ends Athereof outermost and are adap'te'dlto'be extended'beneathmaterial which'isto belifted or stacked. '.Thefguide 'frame i3 also'includes a transversely extending nl" beam S25 secured to the forward.side oi the frame l'S adjacent 4the Ilower end .portion thereof.

Thelbearn has .secured'theretoiears2l v which are nivo'tally mounted onnivot members V28 car- .ried byjirame l5. An intermediate fIloea-m "29is vsecured vto the 'forwar'd sideof vthe iframe l5 .a point below the.upper .end thereof and a .sheave orpulley'tisrotatabIy .carried byrearwardly projecting earsl3`l lxed to vthel'bearn 29. An upperlbeam 32'is xed across .the upperend of .the yframe T8, and an runnersheavef33is rotatably disposed between.a.pai.r of-earsll which are fixed .to the'beam 32.

.A carriageroperating cable 35 engages with the .sheaves or .pulleys 3l)`and-33 and extends downwardly from the upper pulley 33 and engagesabout .a zpulleylor f'sheave t36 which is rotatably carried by the`upper .connecting member 23 of the carriage 2.2. The-cable :35.isextended from the lower sheave Ait 'to vthe lupper -beam 32 Aand ,islined to an eye 31'! 1Vcarried fby the beam member The cable 65 =isextended downwardly Sand .forwardly from :the sheave `3) Vandis woundabout ia winding drum @il .whichzis carried 'by the frame l5:forwardly-of fthe fframe 2| l. The windingdrum 3S jiscennected'withafr'eduction.gearing/or transmlission Zilhaving asshaftiiiextendingtherefrom fon vwhich a tsprocket 5M :is rsecured. A chain l2 :engagesAabout the #sprocket M and also :engages .fabnut Y'the v'sprocket '43which is 'loosely mounted on a shaft M. The shaft M is journalled independing bearings 45 and is connected at its forward end to a powertakeoff or transmission 46 which is connected with the operating engineof the truck or frame l5.

The sprocket 43 includes a toothed clutch 41 on the rear face thereofwhich confronts a toothed clutch 48 which is slidable, but non-rotatableon shaft 44. The frame I8 is held at substantially upright position bymeans of a pair of upwardly and rearwardly divergent supporting orbracing bars 49 which are pivotally connected at their rear ends to ears50 which are fixed to the outer end portions of the beam 29. Thesupporting bars 49 are pivotally secured at their lower ends to pivotmembers I which project from a nut or slide member 52. The nut or slidemember 52 is slidable in a tubular guide 53 which is fixed to a pair oftransversely extending supporting bars 54 xed across the frame I5.

A screw shaft 55 is threaded through the nut 52 being journalled in theends or heads 56 of the guide 53, and one end of the screw shaft 55 hasfixed thereto a sprocket 51. A chain 58 is trained about the sprocket 51and is also trained about a lower sprocket 59 which is rotatably mountedon the shaft 44. The sprocket 59 includes a clutch element 68 on theforward side thereof which confronts a complementary clutch member 6|which is fixed relative to the clutch member 48.

The two clutch members 48 and 6| are adapted to be shifted endwise bymeans of a shifting fork 62 connected with a shifting lever 63.

Referring now to Figures 7, 8, and 9 there is disclosed a modied form ofcarriage guide frame structure generally designated as 64. The framestructure 64 includes a pair of spaced apart parallel channel members 85which are connected together by means of a plurality of connecting bars66. The connecting bars 66 are of H construction, and upwardlyconvergent bracing bars 61 are fixed between pairs of the connectingmembers 66. The upper connecting member 66 has fixed thereto an uppersheave 68, and the next adjacent connecting bar 66 has secured thereto alower sheave 69. The two sheaves 68 and 69 are similar to the sheaves 33and 30 respectively.

An intermediate connecting bar 66 has fixed thereto forwardly projectingears with which the bracing and tilting bars are adapted to be engaged.Lower forwardly projecting ears 1I are secured to the lower one of theconnecting bars 66 and pivot means are adapted to be extended throughthe lower ears 1I for rockably securing the elevator frame 64 on themobile or truck frame. It will be understood that the frame structure 64will have mounted therein an elevator or lifting carriage similar tocarriage 2|.

In the use and operation of this device the upright frame I8 is adaptedto be secured to the rear of a conventional truck frame, and the powertake-off 46 is connected with the transmission of the engine. When it isdesired to pick up lumber or other material the carriage 2| is loweredto its lowermost point, and if desired the frame I8 may be tiltedrearwardly at its upper end so that the arms 25 will be inclineddownwardly and rearwardly. The truck may then be backed to the material,and when the material is engaged on the arms 25 the frame I8 may beswung upwardly and forwardly so as to be in a forwardly and upwardlyinclined position. The

frame I8 is angularly adjusted with respect to the vertical by shiftingclutch member 8| to engage clutch member 68. At this time screw shaftwill be rotated to effect endwise movement of nut 52. Endwise movementof nut 52 will effect rocking or tilting of the frame structure I8. Byhaving a carriage guide frame I8 which can be rocked or tilted to anydesired angle when a relatively heavy load is mounted on the carriage orelevator the forward tilting of the frame I8 will have the effect ofdistributing the weight of the load forwardly, thereby eliminating anyhazard of the forward end of the frame I5 being raised off of the groundby the weight of the load.

When a load has been placed on the carriage 2| the device may be shiftedto any desired point, and the material can be disposed at any desiredheight by vertical adjustment of the carriage 2| This device has beenproduced as an attachment for conventional trucks and has been found tobe more practical in the shifting 0f lumber than the material handlingdevices at present available.

What is claimed is:

A material handling device comprising a mobile frame, an elongatedupright guide frame, oppositely disposed tracks on said guide frame,means pivotally securing the lower end of said guide frame to the rearof said mobile frame, an elevatable carriage movably disposed in saidguide frame, a pair of lift arms projecting rearwardly of said carriage,a horizontal longitudinally disposed tubular guide carried by saidmobile frame, said latter guide having a pair cf oppositely disposedlongitudinal guide slots, a centrally disposed screw shaft journalledlongitudinally of said tubular guide, a nut threaded on said shaft andslidable in said tubular guide, oppositely extending pins carried bysaid nut and loosely extending through said slots, a pair of upwardly,rearwardly and outwardly projecting bracing bars pivotally connectedbetween said pins and said guide frame at an elevated point on saidguide frame on opposite sides thereof, motor means for rotating saidscrew shaft, a pulley carried by said bracing bars adjacent the pivotedconnection to said guide frame, a second pulley carried by the upper endof said guide frame, a motor driven winch, a cable extending from saidwinch about said pulleys connected to said carriage for moving saidcarriage up and down in said frame and clutch means for reversing thedirection of rotation of said screw shaft.

JAKE B. TIPPS.

References Cited in the le of this patent UNITED STATES PATENTS NumberName Date 1,379,472 Morgan et al. 1 May 24, 1921 1,388,831 Broady Aug.23, 1921 2,169,440 Weiss Aug. 15, 1939 2,179,778 Dempster i Nov. 14,1939 2,337,109 Johnson Dec. 21, 1943 2,444,835 Le Tourneau 1 July 6,1948 2,527,928 Heath Oct. 31, 1950 2,532,717 Hawkins Dec. 5, 19502,542,425 Oliver Feb. 20, 1951

